Humidity, definition of
Humidity is a term for the amount of water vapor in the air,
and can refer to any one of several measurements of humidity. Formally,
humid air is not "moist air" but a mixture of water vapor and other
constituents of air, and humidity is defined in terms of the water
content of this mixture, called the Absolute humidity. In everyday usage, it commonly refers to relative humidity, expressed as a percent in weather forecasts and on household humidistat's; it is so called because it measures the current absolute humidity relative to the maximum. Specific humidity is a ratio
of the water vapor content of the mixture to the dry air content (on a
mass basis). The water vapor content of the mixture can be measured
either as mass per volume or as a partial pressure, depending on the
In meteorology, humidity indicates the likelihood of precipitation, dew, or fog. High relative humidity reduces the effectiveness of sweating in cooling the body by reducing the rate of evaporation of moisture from the skin. This effect is calculated in a heat index table, used during summer weather.
EcoWho Articles where 'Humidity' used:
News & Blog articles where 'Humidity' used:
- What is Climate?
We ask: what is climate? and how we experience the climate effects how we think about it.
- Home Ventilation Techniques
Home Ventilation improves the quality of living in your home, we look at the ventilation system options available.
- Mould Prevention, do it yourself tips
Preventing mould in your house without using expensive chemicals or solutions, managing it the DIY way.
- Carbon Offsets, what they are and how they help
Carbon offsets can help with reducing overall carbon emissions by possibly balancing out the carbon impact on the environment. This article goes into more detail on the subject.
- Solar Water heating, how it works and the options available
Solar hot water heating uses the sun to heat hot water. We explain what the hot water heating options are, their advantages and costs.
- Michael Jackson and his Green legacy
The King of Pop is dead - but what is his Green legacy? In this article we have a look at what he has really done for the world and its environment.
- What is a Trombe Wall and how can you use one?
Trombe Walls can provide free heating, cooling and ventilation. We explain how Trombe Walls work; how to build a Trombe Wall and how such a wall saves money by reducing energy usage.
- Low Allergen Building Design
Low allergen design is a whole building approach that aims to reduce and avoid all known allergens, and to minimize the conditions in which they occur. This article shows you how.
- What is Passive Solar?
Passive solar building design is explained and how passive solar principals are used to design green homes and buildings, and save you money.
- Keeping your home Cool in Summer or Warm in Winter for free!
How to keep cool or warm in your home by design, either in Summer or Winter, whilst reducing costs to you and the Earth..
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What is Humidity?
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if on an Android phone.